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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Mathematics
Chapter
Heights and Distances

NTA Abhyas 2020 · Mathematics · Heights and Distances

A ladder 5m long leans against a vertical wall. The bottom of the...

A ladder 5m5\text{m} long leans against a vertical wall. The bottom of the ladder is 3m3\text{m} from the wall. If the bottom of the ladder is pulled 1m1\text{m} farther from the wall, how much does the top of the ladder slide down the wallA ladder 5m long leans against a vertical wall. The bottom of the ladder is 3m from the wall. If the bottom of theA ladder 5m long leans against a vertical wall. The bottom of the ladder is 3m from the wall. If the bottom of the

Options

  1. A1m1\text{m}
  2. B4m\text{4}\text{m}
  3. C2m2\text{m}
  4. D3m\text{3}\text{m}

Correct answer

A. 1m1\text{m}

Step-by-step solution

From first case

A ladder 5m long leans against a vertical wall. The bottom of the ladder is 3m from the wall. If the bottom of the

& From second case,

A ladder 5m long leans against a vertical wall. The bottom of the ladder is 3m from the wall. If the bottom of the

⇒AB=4mandBD=3m⇒ AB = 4\text{m}and BD = 3\text{m}

∴AD=4−3=1m∴AD = 4 - 3 = 1\text{m}
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